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Rattleweed

Crotalaria retusa

Found in disturbed areas. Weakley, Flora of the Southeastern United States (2025), Florida edition What its natural habitat tells you

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Not native

Not native to Florida. How scores work Is it native here?

Profile 53%

Light
Full sun
Soil moisture
Dry to wet

At a glance

Bloom
July to October
Fruiting season
January to April

Not yet recorded · Height · Spread · Life cycle · Leaves

This plant is missing most of its facts, so Quercus is looking them up in old botany books.

Recorded in 22 Florida counties.

Natural habitats

Places it grows wild. Not a planting requirement. Each habitat page lists the plants and wildlife also found there.

Roadsides, fields and disturbed ground

Ground opened by people: roadsides, old fields, pastures, fencerows and lots.

All habitats

Ecological relationships

Who uses this plant?

What these records mean

11CaterpillarsGenus host records with ranges including FL

Genus host records with ranges including FL · Crotalaria

  • Amyna strictaEight-Spot Moth
  • Gesta baptisiaeWild Indigo Duskywing, Baptisia Duskywing
  • Helicoverpa zeaCorn Earworm Moth
  • Hemiargus ceraunusCeraunus Blue, Antillean Blue
  • Leptotes cassiusCassius Blue, Tropical Striped Blue
  • Phoebis sennaeCloudless Sulphur
  • Selenisa sueroidesTailpipes, Pale-Edged Selenisa Moth
  • Spodoptera frugiperdaFall Armyworm Moth
  • Utetheisa ornatrixOrnate Moth, Pink Underwing, Rattlebox Moth, Bella Moth
  • Aproaerema crotolariella
Show all 11
  • Fundella argentina
Shropshire & Tallamy 2025, Lepidoptera of North America north of Mexico, ZooKeys 1261 (ODbL)
—BeesSoutheastern regional records
—Specialist beesPollen specialists
2BirdsRecorded genus food-resource interactions; not a state feeding claim

Recorded genus food-resource interactions; not a state feeding claim · Crotalaria

  • Columbina passerinaCommon Ground Dove
  • Zenaida macrouraMourning Dove
Hurlbert, Olsen, Sawyer & Winner 2021, Avian Diet Database, Scientific Data 8: 260 (CC0)

Direct food only: birds recorded eating this genus across North America. Caterpillars on host plants also feed nesting birds. NC Native Plant Society: butterfly gardening

Growing and identification

Plant details

Family
Fabaceae
Fruit begins
January
Fruit ends
April

Safety has not been reviewed for this plant; check toxicity and thorns before planting.

Growing sources and scope

Conservation status

Florida rankSNA
Global rankG5
FL statusNot verified
Federal statusNot verified

Conservation source Global and federal source

Native alternatives

Find natives for your garden

Sources